I wanted to review Hard Knocks - Season 4, which I consider the best tv series ever. Hard Knocks - Season 4 is a 5/5 tv series for me. Hard Knocks - Season 4 is probably the most known Documentary tv series and it's really entertaining. At all, Sport can boast of one of the biggest numbers of good tv series. It is an interesting, nice tv series that is really worth watching online. The whole tv series is still very relaxing and motivating.